Daily generation fuzzy probability calculation method and device for photovoltaic power generation system

Abstract

The embodiments of the invention disclose a daily generation fuzzy probability calculation method and device for a photovoltaic power generation system, which are used for solving the technical problems that the daily generation calculation method for a distributed photovoltaic power generation system does not comprehensively consider uncertainty and randomness of influence factors and the applicability, practicability and application of the calculation method are difficult to meet in the prior art. The method comprises: according to daily generation data of the photovoltaic power generation system, calculating an n-dimensional generalized trapezoidal fuzzy set for determining daily generation fuzzy uncertainty of the photovoltaic power generation system; calculating an n-dimensional generalized trapezoidal fuzzy set of time period generation of the photovoltaic power generation system according to the influence of sunshine intensity, sunshine temperature rise, sunshine shadow and sunshine deflection angle on the photovoltaic power generation system; calculating the daily generation of the photovoltaic power generation system according to the n-dimensional generalized trapezoidal fuzzy set of time period generation of the photovoltaic power generation system; and determining the daily generation fuzzy probability of the photovoltaic power generation system by calculation according to the daily generation of the photovoltaic power generation system.

Description

technical field [0001] The invention relates to the field of electric power system and its automation, in particular to a method and device for calculating the fuzzy probability of daily power generation of a photovoltaic power generation system. Background technique [0002] The development of solar distributed power generation systems is the development trend of smart cities. Photovoltaic power generation and solar thermal power generation are two different forms of solar power generation. In recent years, photovoltaic-photothermal integrated distributed power generation system has become the mainstream direction of development and the subject of research hotspots. [0003] The principle of photovoltaic power generation is to use the temperature difference of semiconductor or metal materials such as vacuum devices, alkali metals, and magnetic fluids to directly convert solar heat into electrical energy to achieve power generation. The principle of photothermal power gener...

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Problems solved by technology

[0012] The embodiment of the present invention provides a method and device for calculating the fuzzy probability of the daily power generation of a photovoltaic power generation system, which solves the problem that the calculation methods of the daily power generation of a distributed photovoltaic power generation system in the prior art do not fully consider the uncertainty and randomness of the influencing factors. It is difficult to meet the technical problems of applicability, practicability and applicability of calculation methods

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